Tiské stěny (Tisa Rocks) are sandstone group of rocks and a natural landmark near village Tisá, region Ústí nad Labem. They are unique for their expanse and variety of rock formations. They form a labyrinth of sandstone tower, whose tops reach 70 m. The highest point of Tisa Rocks is up to 613 metres altitude. There are two marked circuits leading via so called Small and Big Rocks. Apart from these marked trails it is forbidden to enter the rocks. There is an entrance fee in summer season.
More info here: Tisá